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BONES
Exam 1
28
Anatomy
Undergraduate 2
01/31/2010

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Term
Bone
Definition

support

Movement

protect

mineral storage

Term
Classifications of Bones
Definition
Long, short, flat, irregular
Term
Long (bone)
Definition
more long than wide
shaft at ends
Term
short (bone)
Definition
cube shaped- wrist and ankles-
Term
Flat (bone)
Definition
thin, flat, often curved
Term
Irregular (bone)
Definition
weird shapes (vertebrae, hip bones)
Term
compact bone
Definition
dense, outer layer
Term
Trabecular (spongy) bone
Definition
network of flat pieces called trabeculae
Term
Epiphyses
Definition
bone ends
Term
Diaphysis
Definition
bone shaft
Term
Yellow marrow is found where?
Definition
center of the bone
Term
Periosteum
Definition
membrane outside of bone
Term
Periosteum is connected to ______
Definition
Sharpey's fibers
Term
Short, irregular, and flat bones differ from long bones b/c?
Definition
No diaphysis
Term
Compression causes__________
Definition
compression
Term
Tension causes___________
Definition
strecthing
Term
osteon (haversian system)
Definition
long cylinders parallel to axis
Term
lamellae
Definition
group of tubes
Term
Osteocytes can be found in?
Definition
lacunae
Term
Osteogenesis
Definition
ossification (bone building)
Term
2 types of Osteogenesis
Definition
Intramembranous/ endochondral
Term
intramembranous
Definition
created by mesenchyme
Term
endochondral
Definition
created by cartilage
Term
Intramembranous process
Definition
- mesenchyme forms osteoblast
-no lamellae
-forms flat bones
Term
endochondral ossification
Definition
-bone collar forms around diaphysis
- cartilage calcifies in center
-periosteal bud begins in diaphysis
-secondary ossification centers form in epiphyses
Term
epiphyseal
Definition
epiphysis separates from diaphysis along epiphyseal plate
Term
Spiral
Definition
break when twisting forces are applied to bone
Term
greenstick
Definition
break represents a twig
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